Portable delimiting device and post made of flexible material

ABSTRACT

The invention relates to a portable delimiting device comprising a plurality of single-piece posts ( 1 ) or multi-piece posts ( 11 ) arranged spaced apart from each other, each consisting of a flexible material at least in sections, characterized in that in the erected delimiting device, the post section ( 1   a   , 1   b   , 1   c ) consisting of the flexible material is arranged on all posts ( 1 ) or at least on some of the posts ( 1 ) such that said section runs in an arcuate manner in the direction of an adjacent post ( 1 ), and said section is under tension due to the flexible material properties, wherein the upper post section ( 1   a ), which follows the arcuate section, of a post ( 1 ) is removably connected to the adjacent post ( 1 ).

The invention relates to a transportable boundary demarcation apparatus comprising a plurality of spaced posts which, in each instance, consist at least in certain sections, of a flexible material as well as individual or multi-part posts, which consist at least in certain sections of a flexible material.

Transportable boundary demarcation apparatuses are used for a variety of purposes. Transportable barriers preferably used for the demarcation of construction sites or the spectator areas at an event organized on the street are known. Such barriers usually comprise a individual rectangular frames made of metal or plastic which comprise rod shaped extensions at the bottom side. For the fixation of the frames the extensions named above are inserted into the openings of one or more of the ballast elements.

Transportable boundary demarcations apparatuses are also used as pasture fences. To construct a pasture fence beside the use of wooden posts the use of posts made of metal or plastic is known. Between the vertically arranged posts, in the horizontal direction, spaced wires (span wires) are tightened. Beside inelastic posts, posts consisting of a flexible material are known.

Posts consisting of a flexible material are preferably used to fix an electrical fence. Document DE 26 46 747 discloses fence posts which consist of injection-molded thermoplastic synthetic resin parts having a front adapter, a rear adapter, a bar and in a lower part an anchor plate. When such a post is bent after having been inserted into the ground it will straighten up into its original position. Fence posts made of fiberglass are also known and because of their flexibility are used for the same purpose.

In Document AT 240 584 B a post is disclosed consisting of a polyester chloride tube, wherein the thickness of the wall of the tube over its the entire length gives the post a limited flexibility and also an optimal rigidness. At its upper end the post shows a loop to hold the electrical wire.

Document DE 1 977 994 U discloses electrical fence posts made of a springy material, preferably spring-steel. The loop at the upper end of the post is intended to hold an electrical wire.

Document GB 809,663 discloses an electrical fence post made of metal. The loop at the upper end of the post is electrically isolated to hold the electrical wire.

Document GB 458,563 in general relates to the anchoring of boundary demarcation apparatuses and discloses posts having an upper and a lower part wherein the lower part is anchored firmly in the ground and the upper part is connected detachably with the lower part.

None of the posts mentioned above is adequate for the construction of a boundary demarcation apparatus in which the posts, in each instance, at least in certain sections run in arc shape to the direction of the respective adjacent post and wherein the arc shaped section contributes to the horizontal dimension of the boundary demarcation apparatus.

From the documents U.S. Pat. No. 1,142,233, DE 192 733 A and U.S. Pat. No. 6,386,517 B1 transportable boundary demarcation apparatuses, which are used to boarder flowerbeds in gardens composed of a plurality of U-shaped posts that are inserted with both ends into the ground, are known. The U-shaped posts are preformed, i.e. they are brought into this form during their production. There is no tension caused by the flexible material properties and being transferred by the arc shaped sections which, in each instance, act in a stabilizing manner on the adjacent post.

In case of electrical fences it is important that the electrical wire remains constantly in its originally tightened status. The hanging of the wire easily causes contact between the wire and the grass below so that the wet or not completely withered grass conducts the electricity into the ground having the disadvantage that the subsequent fence section is not charged with sufficient voltage.

To prevent the hanging of the span wires the same are installed by applying a strong pretension. Unfavorably during the perennial use of these fences, despite the pretension, respectively because of the pretension, the wires are flagging thus causing an accelerated collapse of the whole fence. During the installation of such fences the tensile strength of the tightened wires which acts on the anchoring of each post in the ground and weakens the same. A mutual stabilizing of the elements building the fence, i.e. a stabilization among the posts, is not provided by the prior art fences.

Considering this background the problem to be solved by the invention is to provide a transportable and quickly installable boundary demarcation apparatus having self-stabilizing properties.

A further problem to be solved is to provide a boundary demarcation apparatus which is safe in situations of danger and panic, i.e. which gives way for an escape route for humans and animals in case of a panic upon a defined counter pressure.

The problem is solved by a transportable boundary demarcation apparatus having multiple posts disposed spaced apart from one another, which consist, in each instance, at least in certain sections, of a flexible material, characterized in that in the set-up boundary demarcation apparatus,

-   -   the post section (1 a, 1 b, 1 c) that consists of the flexible         material is disposed, in all the posts (1) or at least in a part         of the posts (1), in such a manner that         -   this section runs in arc shape in the direction of an             adjacent post (1), and         -   this section stands under tension due to the flexible             material properties, wherein     -   the upper post section (1 a), which follows the section that         runs in arc shape, of a post (1) is releasably connected with         the adjacent post (1), in each instance.

To solve the problem posts which, in each instance, consist of one or more sections (i.e. upper, middle or lower section) can either be individual (single-part posts) or multi-part posts, i.e. posts comprising a plurality of individual posts arranged in a bundle-like manner (multi-part post).

The self-stabilizing properties of the boundary demarcation apparatus are based on the flexible material properties of the posts which, in each instance, consist at least partially of a flexible material. In addition the self-stabilizing properties are based on the arc-shape arrangement of the posts under tension by using the flexible material properties.

The term “flexibility” in its general meaning names the property of being bendable (flexible) materials. A material constant which can be defined with respect to the elasticity of a material is for example the elasticity modulus. Elasticity is the property of a body or a material to change its shape upon the application of a force and to return to its original shape after the force is no longer applied, as this is the case for example with a spring. The terms “flexible” and “elastic” used with respect to the material properties of the posts according to the present invention are to be considered as synonyms.

The self-stabilizing effect is further amplified if the two terminal posts being positioned at the end of a row of posts according to the present invention are fixed by the application of a tensile strength which acts on the complete boundary demarcation apparatus because of the connection existing, in each instance, between the single posts.

Upon bending the post section which consists of a flexible material the lower section of the same post makes an evasive movement into the opposite direction of the bending. If the lower section shows a ground anchor according to FIG. 2 a this evasive movement results in the penetration of the anchor (see reference numeral 9 a) into the lateral ground and in an improved anchoring of the posts in the lateral ground (side anchor).

Beside the self-stabilizing effect which is an inherent property of the installed boundary demarcation apparatus the same is characterized by the peculiarity that its posts contribute to the vertical extension as well as to the horizontal extension of the boundary demarcation apparatus.

Some of the advantages and specific characteristics related to the boundary demarcation apparatus are summarized subsequently:

-   -   Due to its at least in certain sections arc shaped form in the         assembled status each element contributes to the vertical         extension of the boundary demarcation apparatus as well as to         the horizontal extension of the boundary demarcation apparatus         so that the horizontal elements usually required for the         construction of a fence, for example in the form of horizontal         boards, are no longer required.     -   Upon the corresponding connection of the at least in certain         sections arc shaped posts the height of the boundary demarcation         apparatus is variably adjustable within a certain range upon the         application of tensile strength. Advantageously the restoring         force created by the flexible material of each post, which acts         against the tensile strength, causes at the same time that the         boundary demarcation apparatus is stabilized as a whole.     -   In a preferred embodiment the posts which at least in certain         sections have an arc shaped form show at the upper post section         a connection element yielding, in each instance, a detachable         connection with the adjacent post. In a more preferred         embodiment the connection element is designed as a safety         connection consisting of two clamping elements that are         connected with each other, optionally showing additional safety         panels on the front. The safety connection is released in a         situation of panic under light pressure upon which, in each         instance, the posts due to their elasticity erect vertically         thereby providing an escape route for humans and animals,         wherein the required pressure depends on the type and         configuration of the connection elements.     -   The posts of the boundary demarcation apparatus erect themselves         vertically, i.e. linear, after the connection with the         respective adjacent post has been disconnected and can be         transported and stored in a space saving manner or they can         remain at the installation side without being a hindrance during         the regularly required grass cutting under the fence.

Subsequently preferred embodiments of the boundary demarcation apparatus and the posts building up the same are explained.

In a preferred embodiment the posts consist, in each instance, of a flexible material over their entire length.

In a further preferred embodiment the posts of the transportable boundary demarcation apparatus are divided into an upper and a lower post section, wherein the upper post section of each post consists of a flexible material.

In a further preferred alternative embodiment the posts are divided into three sections, namely an upper and a center post section that lies between the upper post section and the lower post section, wherein the center post section consists of a flexible material.

The releasable connection between the posts can be arranged in different positions and in different ways.

In a preferred embodiment the releasable connection between the upper post section of a first post and an adjacent second post is arranged, in each instance, in the center post section that lies between the upper post section and the lower post section of the adjacent post.

The flexible material of which the posts of the boundary demarcation apparatus consist of is, at least in certain sections, an elastic plastic or an elastic metal wherein the elasticity of the material allows a bending up to 180°.

In a preferred embodiment the flexible material of the posts is made of fiberglass (fiber-reinforced-plastic (GFK)) or another fiber composite material, preferable multi composite fiberglass or a carbon-fiber-reinforced material or plastic.

Fiber reinforced (GFK-rods) having a diameter of 5 to 25 mm are especially suitable for a post length of 1 m to 5 m. GFK-rods (manufacturer Fiber ConcepT, 67059 Ludwigshafen, Germany) having a diameter of 10 mm and a length of 3 to 4 m are especially adequate.

In an alternative preferred embodiment the flexible material consists of two or more metal rods, in each instance, having preferably a round diameter, wherein the metal rods are twisted in the longitudinal direction, comparable to the rope lines of a rope, to increase stability of the posts, respectively the post sections, consisting of the flexible material. An arrangement combining a plurality of metal rods in this way is also known from the wire handles that are part of so-called bottle brushes.

Optionally, in distinct sections, for instance in the lower section, the twisted metal rods can be coated by a material having isolating properties, for example a thermoplastic polymer. In a pasture fence this has the advantage that beside the span wires are the arc shaped post sections being positioned in the horizontal direction can be charged with electricity, while the lower post section is electrically isolated against the surrounding grass.

In a preferred embodiment of the boundary demarcation apparatus the upper post section which is ahead of the arc shaped post section consisting of an elastic material is bent in a hook-like manner at its end. The releasable connection between the upper post section and the adjacent post comes about by hooking the hooked endings of the upper post section at the adjacent post, i.e. embracing the same. The hooks are embracing preferably the section that runs in arc shape.

In an alternative of the embodiment in which the ends of the upper post section are bended in a hook-like manner it is considered to fix a hook in the area of the upper post section. The arrangement of the hook is according to its purpose made in a way that the hook is open in the direction of the lower post section when this post is not in an arc shaped status. Each post comprises a fixation element to determine the height of the connection element of the adjacent post in the area of the arc shaped section.

The connection elements formed in a hook-like manner consist preferably of a thermoplastic polymer.

The connection element can also consist of a rollable band or a rope that can be rolled thus advantageously the distance between the posts can be increased. In a particularly preferred embodiment it is considered that the rollable band is rolled up by a roll-up-mechanism so that in the deinstalled status space can be saved and the post can be handled without any hinderance caused by the band. The rollable band can be an electrical-fence-band, a rope or an electrical-fence-rope.

In a further especially preferred embodiment the posts of the boundary demarcation apparatus, in each instance, comprise a connection element at the upper post section (mostly preferably at the end of the same). The connection element comprises two clamping elements spaced apart from one another, which are connected with each other in a manner that one side remains open, i.e. the access to the area between the clamp jaws is free on this side. The distance between the clamping elements corresponds to the diameter of the neighboring post or is slightly smaller than the diameter of the neighboring post at the position which is considered for construction of the mounting element at the adjacent post so that the installation of the connection element at the adjacent post is carried out in the second case upon the application of easy pressure. This prevents the posts from slipping out during the installation of the boundary demarcation apparatus and thereby supporting the installation.

Depending on the use of the boundary demarcation apparatus it is within the scope of the invention that after installation of the boundary demarcation apparatus, i.e. after the posts consisting of a flexible material, wherein the flexible post sections running in arc shape were connected with each other, additional span wires are fixed. For the fixation of the span wires fixation elements are arranged at the different post sections. If the span wires have to be charged with an electrical voltage, for example when the boundary demarcation apparatus is intended to be used as a pasture fence, the fixation elements are designed as isolators.

For the planar design of the area between the posts it is considered in a specially preferred embodiment of the boundary demarcation apparatus that at least some of the posts have a planar structure as a flexible cover consisting of a flexible material which is arranged in the arc shaped post section. The planar structure makes the demarcation apparatus optically easier to be recognized. This helps that animals running quickly recognize the boundary formed by the apparatus in time.

The planar structure, in each instance, is connected at least at two of its opposite ends with the arc shaped section of the post, wherein at least one of the connections between the flexible material and the arc section is releasable.

In the post section consisting of a flexible material the posts have an arc with a circular to ellipsoid shape, the angle of which lies in the range of 70° to 180°, wherein

-   -   the area circumscribed by the arc is covered, at least in part,         by a planar structure made of a flexible material, and     -   the planar structure made of a flexible material is firmly or         releasable connected with the post section that describes the         arc, over its entire length, or at least with two arc sections         that lie opposite of one another.

The connection between the planar structure consisting of a flexible material and the arced post section over its entire length, respectively between the planar structure and the two post sections that lie opposite of one another, provides that the posts are fixed in an arced state. The type of the connection between the flexible material and the arc or its sections can be permanent or releasable. Thus the connection can be provided for example by folding the flexible material along its entire longitudinal side or at the two end sections that lie opposite of each other and by connecting it with itself, for example by sewing, bonding or a hook-and-loop fastener. So that an opening is formed into which the post can be inserted.

The planar structure consisting of a flexible material (flexible covering) can be made of a woven or a non-woven material. Conceivable are polyester materials, plastic nets, cotton, non-woven fabric or felting.

For advertising purposes the materials forming the planar structure should be printable.

A further aspect of the invention relates to a individual post consisting of an elastic material, wherein the post comprises a connection element at its upper end.

The posts can show various diameters. For reasons of stability a circular or polygonal, at least pentagonal, diameter is preferred. The respective individual post can narrow towards the tip of the post, i.e. its diameter is reduced in the direction of the tip.

It is within the scope of the invention that the posts, in each instance, consist of a plurality of sections that are arranged in a telescope-like manner, wherein at least one of the sections at the upper end consists of a flexible material.

A further aspect of the invention relates to a multi-part post that is used for construction of a boundary demarcation apparatus according to the present invention.

Multi-part means that the post, in each instance, comprises two or more individual posts and the individual posts,

-   -   in each instance, have a different height, and the individual         posts in the multi-part post     -   end flush with one another at the bottom end, and are firmly         connected with one another in the case of a bundle-like         arrangement.

Therein the individual posts belonging to a multi-part post, in each instance, have the same staged length. When the boundary demarcation apparatus is set up with a plurality of multi-part posts of this type the arcs formed by the flexible post sections, arced between two multi-part posts, in each instance, repetitively have the same, respectively approximately the same arc size (see FIG. 2 a.).

The connection of the individual posts that are arranged as a bundle at the lower end section can be produced by a sleeve made of metal or plastic—preferably of a thermoplastic polymer for example a heat shrinkable plastic—wherein the sleeve, in each instance, encloses the individual posts forming the multi-part post and in addition connects the individual posts with each other. The end section of a multi-part post designed in that way serves for the anchoring of the multi-part post in the ground or in a ballast element which shows a corresponding opening.

To obtain an improved anchoring of the multi-part post in the ground the sleeve can show an uneven surface at least in certain sections. The unevenness can be formed by one or more transverse elements, wherein the transverse elements are orientated orthogonally to the longitudinal direction of the post causing an improved anchoring of the post in a lateral direction. The improvement of the anchoring is caused since the transverse elements of the anchor which act as lateral anchors are pressed under the bending of the elastic post into the lateral ground or into the corresponding lateral opening in the ballast element.

An end section designed in such advantageous form is not only adequate for multi-part posts but also for individual posts. It is clear that a non-multi-part post can also show at the lower end a sleeve made of metal or plastic and that the end section of an individual post designed that way can serve for the anchoring of an individual post in the ground or in a ballast element.

In the most preferred embodiment of a multi-part post, in each instance two individual posts having a different length are connected along their longitudinal direction at least in sections by a planar structure made of a flexible material which consists of a woven or non-woven material.

In a further alternative of this embodiment the width of the planar structure is increasing continuously towards the top, i.e. in the direction towards the upper ends of the individual posts. In the consequence the width/height of the planar structure—which in the installed status of a boundary demarcation apparatus is spaned between the two arcs arranged on top of each other—defines the size of the two arcs. In this respect it has to be pointed out that the arcs defined by the individual posts can show a circular or an ellipsoid shape. The arc shape is primarily depending on the distance between the multi-part posts. The arc formed by the elastic post or post section will loose its circular shape when the distance between the post is increasing and will get an arc shape which is more plain, i.e. rather ellipsoid.

The planar structure made of the flexible material which is used in connection with to the multi-part posts can consist of a woven or a non-woven material. Conceivable are materials made of a polyester fabric, nets made of plastic, cotton, a non-woven fabric or felt. For advertising purposes the material should be printable.

The connection between the planar structure and the individual posts can be realized by folding the longitudinal edges and by connecting the material with itself by sewing, sticking or by a hook-and-loop-fastener. The cavity formed by the folding of the material allows the insertion of the individual posts.

A further aspect relates to a boundary demarcation apparatus consisting of multi-part posts. The arrangement of the multi-part posts in this boundary demarcation apparatus is in a manner that

-   -   the individual posts are disposed, in the set-up boundary         demarcation apparatus, in such a manner that, in each instance,         they run in arc shape in the direction of the neighboring post,         with which they are firmly or releasably connected, in the         region of their flexible section and     -   the individual posts describe arcs of a different size, in each         instance, which arcs lie on top of one another, in accordance         with their different lengths.

While the size of the arcs between two multi-part posts is different the size of the arcs in the area between subsequent multi-part posts of the same boundary demarcation apparatus is essentially, with the exception of small fluctuations, the same.

The applications described subsequently benefit from the characteristics and particular advantages of the boundary demarcation apparatus and posts described above.

Preferred is the use of a plurality of individual posts for construction of a boundary demarcation apparatus, in particular for the set-up of a pasture fence. Furthermore preferred is the use of a plurality of individual posts for construction of an apparatus for advertising purposes or for construction of a barrier which is used during an event, in particularly during sporting events, organized as open-air-events or particularly in a construction having a roof.

Furthermore, the use of a plurality of multi-part posts to set up a boundary demarcation apparatus, in particular to install a pasture fence or the use of a single multi-part post to install a pasture gate is preferred.

Also preferred is the use of a plurality of multi-part posts to install an apparatus for advertising purposes or to set up a barrier which is used during an event, in particularly during sporting events, organized as open-air-events or particularly in a construction having a roof.

When the boundary demarcation apparatus is used inside of buildings where crowds of people are present the advantage of the safety aspect of the apparatus becomes relevant. The safety aspect relates to the connection elements which have predetermined breaking points in case that a situation of panic occurs. Upon their breaking the connection to the adjacent post is easily released and the self-erecting post gives way to an emergency exit without any further assistance. Certainly the advantage becomes also relevant at open-air events were people are crowded, like for example sporting events.

Also conceivable is the use of the boundary demarcation apparatus for the separation of the different lanes of a highway during reconditioning of high-way sections or street sections. An advantage related to this type of use is that the height of the boundary demarcation apparatus can be varied by the variation of the tensile strength. With respect to this application of the boundary demarcation apparatus it is considered that light reflectors are arranged at the arced posts, preferably in the upper section. Reflectors reflecting the spot-light of vehicles are available in a variety of colors and reflection intensities.

The following clauses describe essential aspects and preferred combinations of features of the invention.

-   1. Transportable boundary demarcation apparatus having multiple     posts (1) disposed spaced apart from one another, which consist, in     each instance, at least in certain sections, of a flexible material,     characterized in that in the set-up boundary demarcation apparatus,     -   the post section (1 a, 1 b, 1 c) that consists of the flexible         material is disposed, in all the posts (1) or at least in a part         of the posts (1), in such a manner that this section runs in arc         shape in the direction of an adjacent post (1), and     -   the upper post section (1 a), which follows the section that         runs in arc shape, of a post (1) is releasably connected with         the adjacent post (1), in each instance. -   2. Transportable boundary demarcation apparatus according to clause     1, characterized in that the posts (1) consist of a flexible     material over their entire length, in each instance. -   3. Transportable boundary demarcation apparatus according to clause     1, characterized in that the posts (1) are divided into an upper (1     a) and into a lower (1 c) post section, wherein each posts (1) in     the upper post section consists of a flexible material. -   4. Transportable boundary demarcation apparatus according to clause     3, characterized in that the posts (1) are divided, into an upper (1     a) and one that lies between the upper post section (1 a) and the     lower post section (1 c) lying center post section (1 b) consists of     a flexible material.

5. Boundary demarcation apparatus according to one of clauses 1 to 4, characterized in that the releasable connection (2) between the upper post section (1 a) of a first post (1) with an adjacent second post (1) is disposed, in each instance, in the center post section (1 b) that lies between the upper post section (1 a) and the lower post section (1 c) of the adjacent post (1).

-   6. Boundary demarcation apparatus according to clauses 1 to 5,     characterized in that the flexible material is made of an elastic     plastic or an elastic metal. -   7. Boundary demarcation apparatus according to clause 6,     characterized in that the flexible material is made of fiberglass or     a carbon-fiber-reinforced material.     -   8. Boundary demarcation apparatus according to clause 6,         characterized in that the flexible material consists of two or         more metal rods having a round cross-section, in each instance,         wherein the metal rods are wound around one another, comparable         to the individual strands of a rope, to increase the stability         of the post (1), respectively the post section, that consists of         the flexible material, in the longitudinal direction. -   9. Boundary demarcation apparatus according to one of clauses 1 to     8, characterized in that the upper post section, which precedes the     arc shape post section (1 b) and/or (1 c) made of an elastic     material is bent at its end a hook-like. -   10. Boundary demarcation apparatus according to one of the clauses 1     to 8, characterized in that a connection element (2) is disposed on     the upper post section (1 a), in each instance, which connection     element (2) consists of two clamping elements (2 a) spaced apart     from one another, wherein the clamping elements (2 a) are connected     with one another in such a manner that the distance between the     clamping elements (2 a) approximately corresponds to the     cross-section of the adjacent post (1), in the specific post section     that is provided for affixing the connection element (2), for     production of a releasable connection with the adjacent post (1), in     each instance. -   11. Boundary demarcation apparatus according to clauses 1 to 10,     characterized in that at the different post sections fastening     elements for span wires are arranged. -   12. Post (1) for construction of a boundary demarcation apparatus     according to one of claims 1 to 8, characterized in that for     production of a releasable connection with the adjacent post (1),     either     -   the end of the upper post section is bent around, in hook-like         manner, or     -   in the area of the upper post section (1 a) as a connecting         element at least one hook is arranged (2), wherein the opening         of the hook (2) in the non-bent state of the post (1), points in         the direction of the lower post section (1 c). -   13. Post (1) for construction of a boundary demarcation apparatus     according to one of clauses 1 to 10, characterized in that a     connection element (2) is disposed on the upper post section (1 a),     wherein     -   the connection element (2) consists of two clamping elements (2         a) spaced apart from one another, and     -   the clamping elements (2 a) are connected with one another in         such a manner that the distance between the clamping elements (2         a) approximately corresponds to the cross-section of the         adjacent post (1), in the specific post section that is provided         for affixing the connection element (2), for production of a         releasable connection with the adjacent post (1), in each         instance. -   14. Post (1) according to one of the clauses 12 to 13, characterized     in that the diameter of the post (1) is getting continuously smaller     upwardly. -   15. Post (1) according to one of claims 9 and 10, characterized in     that the post (1), in the post section (1 a, 1 b) that consists of a     flexible material, has an arc with a circular to ellipsoid shape,     the angle of which lies in the range of 70° to 180°, wherein     -   the surface area circumscribed by the arc is covered, at least         in part, by a planar structure (10) made of a flexible material,         and     -   the planar structure (10) made of a flexible material is firmly         or releasable connected with the post section that describes the         arc, over its entire length, or at least with two arc sections         (1 a, 1 b) that lie opposite one another. -   16. Post (1) according to clause 15, characterized in that the     planar structure (10) that consists of a flexible material is made     of a woven or a non-woven material. -   17. Post (1) according to clause 15, characterized in that the     planar structure (10) that consists of a flexible material is made     of a polyester fabric, a plastic netting, a cotton fabric, or of a     non-woven fabric or felt. -   18. Multi-part post (11) comprising two or more individual posts (1)     according to one of clauses 12 to 17, wherein the individual posts     (1) have a different height, in each instance, and the individual     posts (1) in the multi-part post (11)     -   ends flush with one another at the bottom end, and     -   are firmly connected with one another, in the case of a         bundle-like arrangement. -   19. Multi-part post (11) according to clause 18, characterized in     that the connection between the posts that are disposed in     bundle-like manner, at the bottom end, is produced by means of a     sleeve (12) made of plastic or metal, which surrounds the individual     posts (1). -   20. Multi-part post (11) according to clause 19, characterized in     that the form of a ground anchor (9) of the sleeve (12) has an     uneven surface with transverse elements that projects out of the     surface. -   21. Multi-part post (11) according to one of claims 13 to 15,     characterized in that two individual posts (1) that belong to a     multi-part post (11), in each instance, having different lengths,     are connected with one another along their longitudinal direction by     means of a planar structure (10) that consists of a flexible     material, which structure consists of a woven or non-woven material. -   22. Multi-part post (11) according to clause 21, characterized in     that the width of the flexible structure (10) increases towards the     upper ends of the individual posts (1) continuously. -   23. Multi-part post according clause 22, characterized in that the     planar structure (10) made of a flexible polyester fabric, a plastic     net or a cotton fabric material has a further connection between the     planar structure and the individual posts (1), wherein the     connection between the planar structure and the individual posts is     produced by folding the longitudinal edges and by connecting the     material with itself by sewing, sticking or by a     hook-and-loop-fastener and wherein the shorter individual post (1)     can be inserted into the cavity formed by the folding of shorter     longitudinal edge and the longer individual post (1) can be inserted     into the cavity formed by the folding of longer longitudinal edge. -   24. Boundary demarcation apparatus constructed by multi-part posts     (11) according to one of clauses 18 to 23. -   25. Boundary demarcation apparatus according to clause 23,     constructed of multiple multi-part posts (11) according to one of     clauses 18 to 23, wherein     -   the individual posts (1) are disposed, in the set-up boundary         demarcation apparatus, in such a manner that they run in arc         shape in the direction of the neighboring post (1), with which         they are firmly or releasably connected, in the region of their         flexible section, in each instance, and     -   the individual posts (1) describe arcs of a different size, in         each instance, which arcs lie on top of one another, in         accordance with their different lengths. -   26. Use of a plurality of the posts (1) according to one of the     clauses 12 to 17 a boundary demarcation apparatus, in particular for     construction of pasture fence. -   27. Use of a plurality of posts (1) according to one of the clauses     12 to 17, for construction of a barrier at events and for     construction of an apparatus for advertising purposes. -   28. Use of a multi-part post (11) according to one of the clauses 18     to 23 for construction of a pasture gate. -   29. Use of a plurality of multi-part posts (11) according to one of     clauses 18 to 23 for construction of a boundary demarcation     apparatus, in particular for construction of a pasture fence. -   30. Use of a plurality of multi-part post (11) according to one of     the clauses 18 to 23 for construction of a boundary demarcation     apparatus for advertising purposes, or to construct a barrier at     events.

EXAMPLES

It shows:

FIG. 1 a Fence with posts made of a flexible material

FIG. 1 b Fence with posts, consisting partially of a flexible material

FIG. 1 c Fence with posts made of a flexible material with alternating curvature

FIG. 2 a Fence with two-part posts made of flexible material and stabilizer made of planar structure

FIG. 2 b Fence with individual posts made of a flexible material and stabilizer made of a polyester fabric

FIG. 3 a Function of the connection elements and the clamping elements

FIG. 3 b Function of a connection element with safety panels

FIG. 4 Illustration of possible forms of use of a boundary demarcation apparatus at events

The examples serve merely to illustrate the preferred embodiments and are not intended to limit the invention.

SPECIFICATION OF THE EXAMPLES

FIG. 1 a shows a boundary demarcation apparatus which is also useable as a fence. In the present example the individual post 1 consists of a flexible material with the exception of the lower post section 1 c that is in the ground. The post sections 1 a made of a flexible material are arranged in arc shape, wherein the arced section, in each instance, contributes to the horizontal dimension of the boundary demarcation apparatus. In the present example the connection elements 2 are formed by the hook-shaped end section of each of the posts. The fixation element 3 is fixing the height of the end section that is designed in a hook-shaped manner after the fixation at the respective neighboring post. In the present example first the posts shown in the figure on the left are connected with each other. Last the post 1 adjacent to the terminal post 7 will be connected with the post section 1 c on the left, also made of a flexible material. Finally the row of posts that are connected with each other will be fixed with the tensioning element in its final position.

The individual posts 1 made of a flexible material, in each instance, show a fastening element 5 a at the peak of the arc for the wire 6. The wire is fixed at the terminal post 7 by the fastening element 5 c. Furthermore, at its intermediate height, the fence shows an additional span wire 6 b that is also fixed at the terminal post 7. The wires 6 can also be designed as so called electrical bands (electrical fence bands). These electrical fence bands are bands made of plastic having plaited stainless steel wires which are electrically conductive and which are used in connection with electrical pasture fences.

At the end section of their lower end the individual posts 1 have a ground anchor 9 a that is positioned in the ground. Ground anchor 9 a is formed in a way that, in each instance, under the influence of tensile strength induced by the adjacent post the post digs itself into the ground in the horizontal direction thereby anchoring the respective posts additionally. In the present example the ground anchor 9 a has a saw-tooth pattern on its side. The saw-tooth pattern of the ground anchor 9 a narrows towards the bottom, i.e. into the direction of the tip of the post which is positioned in the ground. The wedge-shaped design of the ground anchor, i.e. its reduction towards the tip of the post, enables an easier anchoring of the post and has the advantage that the post can be removed easily from the ground using a spade that is penetrated along the side of the anchor and then moved in a direction towards the post thus loosening the post when the fence is reinstalled.

FIG. 1 b shows a fence having posts 1 which, in each instance, consist only in sections of a flexible material. In the present example the upper section is made of a flexible material while the section 1 b that is positioned essentially in the horizontal direction is made of an inflexible material. The connection to the respective adjacent post 1 established by the connection element 2 is arranged, in each instance, in the area of post section 1 a which is made of a flexible material. At the intermediate height of the post section 1 b an additional wire, which is fixed at the post section 1 b by the fastening element 5 b that consists of an electrically isolating material like plastic. The end of wire 6 b is fixed at the terminal post 7 with a fastening element 5 c.

The post adjacent to the terminal post 7 is fixed at the terminal post 7 with the tensioning element 8.

FIG. 1 c shows an embodiment of the fence characterized in that, in each instance, the adjacent posts 1 are curved into alternating directions. Thereby, in each instance, two adjacent posts 1 a that consists in the present example completely of a flexible material form a complete arc. The connection of the two post sections 1 a forming a complete arc can be made in different ways. In case of the present example in FIG. 1 c the post sections 1 a of the arc are connected with each other in the middle by the post sections 1 a which have hook-shaped endings. Alternatively, the connection between the post sections 1 a can be achieved by a clamping connection as shown by the arcs in FIG. 1 c on the left and on the right by over-lapping section-wise. The clamping connection, for example, can be made by the fastening element 5 a which is clamped on the over-lapping section and in addition shows an apparatus on the top for the fixation of a wire. Alternatively or in addition, the over-lapping post sections 1 a can be fixed by a cable connector as shown in the arc on the left side. The post sections being bent alternately, in each instance, are inserted into the ground in pairs. For this purpose, in the example shown in FIG. 1 c, a pre-built anchor is used. The advantage of the arrangement of the flexible posts shown in FIG. 1 c, compared to the arrangement shown in FIG. 1 a or 1 b, is that, the number of posts required for construction of the fence shown in FIG. 1 c is fifty percent lower than in the two examples mentioned first. This can be an important advantage if the ground is stony since overall one post less has to be anchored.

Approximately at the intermediate height the fence shows the wire 6 a, which is fixed by the fastening element 5 b at the post section 1 a made of a flexible material.

FIG. 2 a shows a fence having multi-part posts 11 comprising, in each instance, two individual posts 1, i.e. each post 11 comprises a long section and a short section. Both sections are connected with the neighboring post 11, in each instance, by the connection element 2, in each instance, at a different height. Thereby the longer section formes the bigger arc compared to the shorter section. The post arranged adjacent to the terminal post 7, between the bigger and the smaller arc mentioned above, in addition shows a polyester fabric as a planar structure 10. The polyester fabric 13 can be designed in a signal color to improve visibility of the boundary demarcation apparatus for humans and for animals. Thus the polyester fabric 13 serves to stabilize the two arcs arranged on top of each other and to improve its visibility. To prevent that the planar structure 13 flutters in the wind the planar structure can show a plurality of openings being distanced regularly giving the structure an overall net like structure. As an alternative the polyester fabric that is spanned between the two arcs can be used as an apparatus for advertising. In those sections of the bigger arcs in which the fixation of the connection elements 2 is considered the polyester fabric is recessed.

In the demounted state the longer as well as the shorter individual post 1 of the multi-part posts 11 are essentially linear, wherein the polyester fabric is hanging flabbily between the post sections. Thus the posts 11 can be stored in a overall space saving manner. In the present example in FIG. 2 a no polyester fabric is considered for the post section 1 a belonging to one post.

At the intermediate height the fence shows an additional wire 6 a that is fixed at the individual posts by a fastening element 5 b. The end of the wire 6 a is fixed by the fastening element 5 c at the terminal post 7. The posts 11 shown in FIG. 2 a have a ground anchor 9 a arranged at the ground-facing terminal section. The multi-part posts 11 having two elements in this section are not divided into two elements anymore but are combined uniformly and are encompassed by a sleeve 12 which connects the individual posts 1 tightly. The sleeve can be made of plastic or of steel pressed on to post subsequently.

By means of the fastening elements 5 a which are clamped on the upper arc section 1 a an additional wire 6 a is fixed. This wire forming the upper part of the fence is fixed at the terminal post 7 by the fastening element 5 c.

In case that the ground anchor is wedge-shaped towards its end the post can be removed by a conventional spade—after penetrating the same into the ground it can be pressed against the longest upper horizontal part of the anchor which thereby can be removed from the ground easily.

FIG. 2 b shows a fence which again is composed of individual posts that (with the exception of the ground-facing section 1 c) over their entire length consist of a flexible material and are therefore runs in arc shape almost over their entire length. The posts 1 a at their upper end show the connection elements 2. In the present example the connection elements 2 are not formed as hooks but as clamping elements 2 a. The inside of the two clamping elements 2 a shows an elastic material. The distance between the two clamping elements 2 a is slightly reduced compared to the diameter of the posts 1 in the relevant section 1 b. Thereby it is possible that the connection element 2 can be fixed at the, in each instance, adjacent post 1 with easy compacting pressure. Finally, when the tensioning element is fixed the fence will form its characteristic arcs. With the progressive formation of the arcs the tilting of the clamping elements 2 a occurs and yields a progressive stabilization of the connection between the individual posts.

Two of the three arcs shown in FIG. 2 b in the area of the arc in addition have a polyester fabric 10 forming a planar structure. In case of the post adjacent to the terminal post 7 the polyester fabric 10 is cut so that it covers the whole arc area except the section in which the tensioning element is fixed. In case of the post shown on the left of FIG. 2 b the polyester fabric 10 is designed in a way that the arc is not completely covered but the fabric is spanned over the arc diagonally. Both polyester fabrics 10 determine the respective width of the arc. When during the installation of the fence to the posts standing in a row finally a tensile strength is applied by using the tensioning element the polyester fabrics 10—which are unfolded due to the tensile strength—produce a counter force. In this way the polyester fabrics contribute to the further stabilization of the fence.

The fence shown in FIG. 2 b exhibits, approximately on the intermediate height, an additional wire 6 a which is fixed by means of the fastening element 5 b in the post sections 1 a. At its end the wire 6 a is fixed by the fastening element 5 c at the terminal post 7.

FIG. 3 a shows in picture A three posts 1 made of a flexible material which are connected with each other by the connection elements 2. The connection between the posts 1 is stabilizing itself upon the bending of the upper post sections. The connection elements 2 are arranged in the present example, in each instance, at the end of the upper post section. The connection elements 2 show, in each instance, two clamping elements 2 a, which embrace the adjacent post. In the examples shown the posts 1 are anchored in the ballast elements 9 b. For this purpose the ballast elements 9 b have openings 9 c that are orientated upwardly. In the example on the left the opening 9 c has an additional lateral opening into which a transverse element that is arranged on the lower post section is inserted. In this way a removal of the post is prevented and advantageously an additional locking devise is not required since the post moves laterally with its lower section upon the force produced by the bending so that the transverse element is pressed into the lateral opening. This self-saveguarding effect is caused by the elastic material properties of the posts 1.

In picture B a possible flexible embodiment of connection element 2 is shown. In this case the connection element 2 consists of the two clamping elements 2 a which are connected with each other on one side. On its open side the connection element 2 is fixed at the adjacent post which is still in its vertical orientation so that the two clamping elements 2 a embrace the adjacent post section wise. The distance between the two clamping elements 2 a is dimensioned in way that is marginally bigger, identical or marginally smaller than the diameter of the adjacent post in the relevant section. Thereby during the bending of the adjacent post it comes to an enhancement of the contact produced by the connection element 2. For the additional saveguarding of the connection produced by the connection element 2 the two clamping elements 2 a can have a deepening with a curvature corresponding to the curvature of the adjacent post. To prevent the shifting of the fastening elements the same can consist of a rubber-like material on their internal side or be charged with a rubber-like material so that the friction towards the surface of the posts 1 is increased.

In picture C of FIG. 3 a a especially preferred connection element 2 is shown. This connection element 2 is also arranged at the upper post section 1 a and consists of the two clamping elements 2 a. In addition this especially preferred connection element shows the two safety panels 2 b. The mode of operation of the safety panels 2 b is shown in FIG. 3 b.

FIG. 3 b shows the mode of operation of a especially preferred connection element 2 which can be used to connect the inventive posts for construction of a boundary demarcation apparatus.

Picture A in FIG. 3 b shows the connection element 2 which is arranged at the upper post section 1 a of the first post. The two clamping elements 2 a belonging to the connection element 2 are linked with each other on one side so that on the opposite open side the adjacent post 1 can be pressed in. The two clamping elements 2 a are rounded and contact post 1 with the front part of the curvature only. Laterally the clamping elements 2 a are covered by the safety panels 2 b. In the horizontal direction the two safety panels 2 b covering the clamping elements 2 a are distanced so that the adjacent post can be inserted through the safety panels 2 b between the clamping elements 2 a during the installation of the boundary demarcation apparatus without hindrance.

Picture B in FIG. 3 b shows the safety effect during the bending of post 1 caused by the safety panels 2 b being positioned in the connection element 2. During bending of post 1 the rounded clamping elements 2 a allow an inclined position of post 1. However, in the inclined status, i.e. in the set-up status, the post is partially covered and thereby save-guarded by the two safety panels 2 b which are unchanged in their position compared to picture A. This at least partial covering of the post by the safety panels 2 b prevents the post 1 to glide out of the lateral opening in connection element 2 again. The safety panels can have a pre-defined stability so that in a situation of panic the connection to the adjacent post is released easier. During dismounting of the boundary demarcation apparatus again it comes to the vertical orientation of the adjacent posts so that the status shown in picture A is retained and the connection element 2 can be removed easier from post one since post one—in the status shown in picture A—is not covered by the safety panels 2 b.

A safety effect similar to that shown in context with the connection element in FIG. 3 b picture B can be achieved with a connection element that shows a central circular opening to hold the respective adjacent post and—like the connection element shown in FIG. 3 a B—is also open on one side so that the respective adjacent post which is orientated essentially vertically during the installation can be inserted laterally. The characteristic of this alternative embodiment of a connection element is that the cross-sectional area of the central opening, starting from the centre, is widening towards the top and towards the bottom in a funnel-shaped manner. The widening of the funnel is designed in a way so that in a mounted boundary demarcation apparatus the surface of the adjacent post is in planar contact with those two inner-surfaces of the two funnels that are orientated towards each other diagonally. Due to the planar contact the risk of shifting is reduced.

FIG. 4 shows a possible field of application for a boundary demarcation apparatus constructed with multi-part posts 11. An application of this type can for example be interesting at sporting events like marathons. The boundary demarcation apparatus shown on the left is composed of individual posts which are inserted into pre-built openings on the pavement. In the section lying before connection element 2 the arc shape section of posts 11 show a covering made of a planar flexible material like for example polyester.

The boundary demarcation apparatus shown on the right consists of multi-part posts 11 which are fixed by the ballast elements 9 b. The multi-part posts 11 are, in each instance, connected with each other in the bent state by the connection elements 2. The area between the two individual posts belonging to the multi-part post 11 and partially circumscribed by the individual posts is covered by a planar and flexible material like for example polyester which can be printed for sales promotion purposes.

LIST OF REFERENCE NUMERALS

-   1. post (individual post) -   1 a. upper post section -   1 b. center post section -   1 c. lower post section -   2. connection element -   2 a. clamping element -   2 b. safety panels -   3. fixation element for determining the height of the connection     elements -   4. opening in the planar structure -   5 a. fastening element for a span wire -   5 b. fastening element for a span wire -   5 c. fastening element for a span wire -   6 a. upper wire/alternative upper electrical belt -   6 b. lower wire/alternative lower electrical belt -   7. terminal post (inflexible) -   8. tensioning element -   9 a. ground anchor -   9 b. ballast element -   9 c. opening in the ballast element -   10. planar structure made of a flexible material -   11. multi-part post -   12. sleeve 

1. Transportable boundary demarcation apparatus having multiple posts (1) disposed spaced apart from one another, which consist, in each instance, at least in certain sections, of a flexible material, wherein in the set-up boundary demarcation apparatus, the post section (1 a, 1 b, 1 c) that consists of the flexible material is disposed, in all the posts (1) or at least in a part of the posts (1), in such a manner that this section runs in arc shape in the direction of an adjacent post (1), and this section stands under tension due to the flexible material properties, wherein the upper post section (1 a), which follows the section that runs in arc shape, of a post (1) is releasably connected with the adjacent post (1), in each instance.
 2. Transportable boundary demarcation apparatus according to claim 1, wherein the posts (1) consist of a flexible material over their entire length, in each instance.
 3. Transportable boundary demarcation apparatus according to claim 1, wherein the posts (1) are divided into an upper and a center post section (1 b) that lies between the upper post section (1 a) and the lower post section (1 c), wherein the center post section (1 b) consists of a flexible material.
 4. Transportable boundary demarcation apparatus according to claim 3, wherein the, releasable connection (2) between the upper post section (1 a) of a first post (1) with an adjacent second post (1) is disposed, in each instance, in the center post section (1 b) that lies between the upper post section (1 a) and the lower post section (1 c) of the adjacent post (1).
 5. Boundary demarcation apparatus according to claim 1, wherein the flexible material is made of an elastic plastic or an elastic metal.
 6. Boundary demarcation apparatus according to claim 5, wherein the flexible material is made of fiberglass or a carbon-fiber-reinforced material.
 7. Boundary demarcation apparatus according to claim 5, wherein the flexible material consists of two or more metal rods having a round cross-section, in each instance, wherein the metal rods are wound around one another, comparable to the individual strands of a rope, to increase the stability of the post (1) or post section that consists of the flexible material, in the longitudinal direction.
 8. Boundary demarcation apparatus according to claim 1, wherein a connection element (2) is disposed on the upper post section (1 a), in each instance, which element consists of two clamping elements (2 a) spaced apart from one another, wherein the distance between the clamping elements (2 a) is dimensioned to be the same or slightly less than the cross-section of the adjacent post (1), in the specific post section (1 a, 1 b) that is provided for affixing the connection element (2), for production of a releasable connection between two adjacent posts (1).
 9. Post (1) for construction of a boundary demarcation apparatus according to Claim 1, wherein for production of a releasable connection with the adjacent post (1), either the end of the upper post section is bent around, in hook-like manner, or at least one hook (2) is disposed in the region of the upper post section (1 a), as a connection element, wherein the opening of the hook (2), in the non-bent state of the post (1), points in the direction of the lower post section (1 c), and each post (1) has a fixation element (3) in the region of the section that runs in arc shape, to establish the height of the connection element (2) that belongs to the adjacent post.
 10. Post (1) for construction of a boundary demarcation apparatus according to claim 1, wherein a connection element (2) is disposed on the upper post section (1 a), wherein the connection element (2) consists of two clamping elements (2 a) spaced apart from one another, and the clamping elements (2 a) are connected with one another in such a manner that the distance between the clamping elements (2 a) approximately corresponds to the cross-section of the adjacent post (1), in the specific post section that is provided for affixing the connection element (2), for production of a releasable connection with the adjacent post (1), in each instance.
 11. Post (1) according to claim 9, wherein the post (1), in the post section (1 a, 1 b) that consists of a flexible material, has an arc with a circular to ellipsoid shape, the angle of which lies in the range of 70° to 180°, wherein the surface area circumscribed by the arc is covered, at least in part, by a planar structure (10) made of flexible material, and the planar structure (10) made of a flexible material is firmly or releasably connected with the post section that describes the arc, over its entire length, or at least with two arc sections (1 a, 1 b) that lie opposite one another.
 12. Post (1) according to claim 11, wherein the planar structure that consists of a flexible material is made of a polyester fabric, a plastic netting, a cotton fabric, or of a nonwoven fabric or felt.
 13. Multi-part post (11) comprising two or more individual posts (1) according to claim 9, wherein the individual posts (1) have a different height, in each instance, and the individual posts (1) in the multi-part post (11) end flush with one another at the bottom end, and are firmly connected with one another, in the case of a bundle-like arrangement.
 14. Multi-part post (11) according to claim 13, wherein the connection between the posts that are disposed in bundle-like manner, at the bottom end, is produced by means of a sleeve (12) made of plastic or metal, which surrounds the individual posts (1).
 15. Multi-part post (11) according to claim 14, wherein the sleeve (12), which is configured as a ground anchor (9 a), has an uneven surface with transverse elements that project out of the surface, on the outside, wherein the transverse elements serve for lateral anchoring of the post (11).
 16. Multi-part post (11) according to claim 13, wherein two individual posts (1) that belong to a multi-part post (11), in each instance, having different lengths, are connected with one another along their longitudinal direction by means of a planar structure (10) that consists of a flexible material, which structure consists of a woven or nonwoven material.
 17. Boundary demarcation apparatus constructed of multiple multi-part posts (11) according to claim
 13. 18. Boundary demarcation apparatus according to claim 17, constructed of multiple multi-part posts (11), wherein the individual posts (1) are disposed, in the set-up boundary demarcation apparatus, in such a manner that they run in arc shape in the direction of the neighboring post (1), with which they are firmly or releasably connected, in the region of their flexible section, in each instance, and the individual posts (1) describe arcs of a different size, in each instance, which arcs lie on top of one another, in accordance with their different lengths.
 19. Use of a plurality of posts (1) according to claim 9 or a plurality of multi-part posts (11) for construction of a boundary demarcation apparatus that serves as a pasture fence, of a pasture fence, and use of a post (1) or a multi-part post (11) for construction of a pasture gate.
 20. Use of a plurality of posts (1) according to claim 9 or a plurality of multi-part posts (11) for construction of an apparatus for advertising purposes or for construction of a barrier at events. 